4650% is the change from 18 to 855
Calculation steps:
[( 855 - 18 ) ÷ 18] x 100 = 4650%
Formula
Percentage change = [(855 - 18) / 18] x 100
Subtract the new number by the original number
855 - 18 = 837
837 ÷ 18 = 46.5
46.5 x 100 = 4650%
Example